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Ok this is the situation, I have two DirecTV receivers in the same media cabinet. The HR24 is for watching programming in the room. I have an H21 hooked up to my Slingbox Pro-HD. Originally whenever I would turn off the the HR24 it would also turn off the HR21 so I changed the IR code on the H21 to 00002, this solved the power on/off issue but now the IR blaster connected to the Slingbox + H21 wont change channels. I tested the IR blaster with the HR24 and it DOES in fact change that receivers channels. How do I fix this?